Can I put a roll cage with KC lights in my truck?

...well sure, if there is an appropriate place to mount them....bet there is an open fuse in your fusebox especially for this~if not aux lights, one that says "spare" just getting the power to the lights, you've got to be a little sneaky with the harness...follow their directions~

you may have to drill a hole to mount the switch if you cannot piggyback it onto an existing fuse and switch~

couple of things here. first, it is a light bar, not a roll bar. it will not provide any protection if your truck rolls over. second, you need to wire the lights on a separate harness. they will pull too much power for any of the other circuits on your truck. you can wire them through a relay, so they would only come on when other lights are on, but the main power must come directly from the battery.

really madmopar? first thing you dont have to be rude, second I don't care about the lights I just want the bars, this even says roll bars http://www.summitracing.com/search/department/exterior- accessories/section/ROLL-BARS-light-bars-light- mounts/make/dodge/model/ram-1500

sorry if you took it as rude. I have been selling accessories for 18 years. back when I started, these were referred to as roll bars. everyone stopped calling them that after all the lawsuits. a roll bar is mounted to the frame. a light bar or "show bar" as they are referred to now just mounts in the bed or to the rails.